math solving problems with answers

• Solve equations and inequalities
• Simplify expressions
• Factor polynomials
• Graph equations and inequalities
• Advanced solvers
• All solvers
• Arithmetics
• Determinant
• Percentages
• Scientific Notation
• Inequalities

What can QuickMath do?

QuickMath will automatically answer the most common problems in algebra, equations and calculus faced by high-school and college students.

• The algebra section allows you to expand, factor or simplify virtually any expression you choose. It also has commands for splitting fractions into partial fractions, combining several fractions into one and cancelling common factors within a fraction.
• The equations section lets you solve an equation or system of equations. You can usually find the exact answer or, if necessary, a numerical answer to almost any accuracy you require.
• The inequalities section lets you solve an inequality or a system of inequalities for a single variable. You can also plot inequalities in two variables.
• The calculus section will carry out differentiation as well as definite and indefinite integration.
• The matrices section contains commands for the arithmetic manipulation of matrices.
• The graphs section contains commands for plotting equations and inequalities.
• The numbers section has a percentages command for explaining the most common types of percentage problems and a section for dealing with scientific notation.

Math Topics

More solvers.

• Add Fractions
• Simplify Fractions

Get step-by-step solutions to your math problems

Try Math Solver

Get step-by-step explanations

Graph your math problems

Practice, practice, practice

Get math help in your language

• Skip to main content
• Skip to primary sidebar
• Skip to footer

Additional menu

Khan Academy Blog

Free Math Worksheets — Over 100k free practice problems on Khan Academy

Looking for free math worksheets.

You’ve found something even better!

That’s because Khan Academy has over 100,000 free practice questions. And they’re even better than traditional math worksheets – more instantaneous, more interactive, and more fun!

Just choose your grade level or topic to get access to 100% free practice questions:

Kindergarten, basic geometry, pre-algebra, algebra basics, high school geometry.

• Trigonometry

Statistics and probability

High school statistics, ap®︎/college statistics, precalculus, differential calculus, integral calculus, ap®︎/college calculus ab, ap®︎/college calculus bc, multivariable calculus, differential equations, linear algebra.

• Addition and subtraction
• Place value (tens and hundreds)
• Addition and subtraction within 20
• Addition and subtraction within 100
• Addition and subtraction within 1000
• Measurement and data
• Counting and place value
• Measurement and geometry
• Place value
• Measurement, data, and geometry
• Add and subtract within 20
• Add and subtract within 100
• Add and subtract within 1,000
• Money and time
• Measurement
• Intro to multiplication
• 1-digit multiplication
• Addition, subtraction, and estimation
• Intro to division
• Understand fractions
• Equivalent fractions and comparing fractions
• More with multiplication and division
• Arithmetic patterns and problem solving
• Quadrilaterals
• Represent and interpret data
• Multiply by 1-digit numbers
• Multiply by 2-digit numbers
• Factors, multiples and patterns
• Add and subtract fractions
• Multiply fractions
• Understand decimals
• Plane figures
• Measuring angles
• Area and perimeter
• Units of measurement
• Decimal place value
• Add decimals
• Subtract decimals
• Multi-digit multiplication and division
• Divide fractions
• Multiply decimals
• Divide decimals
• Powers of ten
• Coordinate plane
• Algebraic thinking
• Converting units of measure
• Properties of shapes
• Ratios, rates, & percentages
• Arithmetic operations
• Negative numbers
• Properties of numbers
• Variables & expressions
• Equations & inequalities introduction
• Data and statistics
• Negative numbers: addition and subtraction
• Negative numbers: multiplication and division
• Fractions, decimals, & percentages
• Rates & proportional relationships
• Expressions, equations, & inequalities
• Numbers and operations
• Solving equations with one unknown
• Linear equations and functions
• Systems of equations
• Geometric transformations
• Data and modeling
• Volume and surface area
• Pythagorean theorem
• Transformations, congruence, and similarity
• Arithmetic properties
• Factors and multiples
• Reading and interpreting data
• Negative numbers and coordinate plane
• Ratios, rates, proportions
• Equations, expressions, and inequalities
• Exponents, radicals, and scientific notation
• Foundations
• Algebraic expressions
• Linear equations and inequalities
• Graphing lines and slope
• Expressions with exponents
• Quadratics and polynomials
• Equations and geometry
• Algebra foundations
• Solving equations & inequalities
• Working with units
• Linear equations & graphs
• Forms of linear equations
• Inequalities (systems & graphs)
• Absolute value & piecewise functions
• Exponents & radicals
• Exponential growth & decay
• Quadratics: Multiplying & factoring
• Quadratic functions & equations
• Irrational numbers
• Performing transformations
• Transformation properties and proofs
• Right triangles & trigonometry
• Non-right triangles & trigonometry (Advanced)
• Analytic geometry
• Conic sections
• Solid geometry
• Polynomial arithmetic
• Complex numbers
• Polynomial factorization
• Polynomial division
• Polynomial graphs
• Rational exponents and radicals
• Exponential models
• Transformations of functions
• Rational functions
• Trigonometric functions
• Non-right triangles & trigonometry
• Trigonometric equations and identities
• Analyzing categorical data
• Displaying and comparing quantitative data
• Summarizing quantitative data
• Modeling data distributions
• Exploring bivariate numerical data
• Study design
• Probability
• Counting, permutations, and combinations
• Random variables
• Sampling distributions
• Confidence intervals
• Significance tests (hypothesis testing)
• Two-sample inference for the difference between groups
• Inference for categorical data (chi-square tests)
• Advanced regression (inference and transforming)
• Analysis of variance (ANOVA)
• Scatterplots
• Data distributions
• Two-way tables
• Binomial probability
• Normal distributions
• Displaying and describing quantitative data
• Inference comparing two groups or populations
• Chi-square tests for categorical data
• More on regression
• Prepare for the 2020 AP®︎ Statistics Exam
• AP®︎ Statistics Standards mappings
• Polynomials
• Composite functions
• Probability and combinatorics
• Limits and continuity
• Derivatives: definition and basic rules
• Derivatives: chain rule and other advanced topics
• Applications of derivatives
• Analyzing functions
• Parametric equations, polar coordinates, and vector-valued functions
• Applications of integrals
• Differentiation: definition and basic derivative rules
• Differentiation: composite, implicit, and inverse functions
• Contextual applications of differentiation
• Applying derivatives to analyze functions
• Integration and accumulation of change
• Applications of integration
• AP Calculus AB solved free response questions from past exams
• AP®︎ Calculus AB Standards mappings
• Infinite sequences and series
• AP Calculus BC solved exams
• AP®︎ Calculus BC Standards mappings
• Integrals review
• Integration techniques
• Thinking about multivariable functions
• Derivatives of multivariable functions
• Applications of multivariable derivatives
• Integrating multivariable functions
• Green’s, Stokes’, and the divergence theorems
• First order differential equations
• Second order linear equations
• Laplace transform
• Vectors and spaces
• Matrix transformations
• Alternate coordinate systems (bases)

Frequently Asked Questions about Khan Academy and Math Worksheets

Why is khan academy even better than traditional math worksheets.

Khan Academy’s 100,000+ free practice questions give instant feedback, don’t need to be graded, and don’t require a printer.

What do Khan Academy’s interactive math worksheets look like?

Here’s an example:

What are teachers saying about Khan Academy’s interactive math worksheets?

“My students love Khan Academy because they can immediately learn from their mistakes, unlike traditional worksheets.”

Is Khan Academy free?

Khan Academy’s practice questions are 100% free—with no ads or subscriptions.

What do Khan Academy’s interactive math worksheets cover?

Our 100,000+ practice questions cover every math topic from arithmetic to calculus, as well as ELA, Science, Social Studies, and more.

Is Khan Academy a company?

Khan Academy is a nonprofit with a mission to provide a free, world-class education to anyone, anywhere.

Want to get even more out of Khan Academy?

Then be sure to check out our teacher tools . They’ll help you assign the perfect practice for each student from our full math curriculum and track your students’ progress across the year. Plus, they’re also 100% free — with no subscriptions and no ads.

Unit 2: Solving equations & inequalities

About this unit, linear equations with variables on both sides.

• Why we do the same thing to both sides: Variable on both sides (Opens a modal)
• Intro to equations with variables on both sides (Opens a modal)
• Equations with variables on both sides: 20-7x=6x-6 (Opens a modal)
• Equation with variables on both sides: fractions (Opens a modal)
• Equation with the variable in the denominator (Opens a modal)
• Equations with variables on both sides Get 3 of 4 questions to level up!
• Equations with variables on both sides: decimals & fractions Get 3 of 4 questions to level up!

Linear equations with parentheses

• Equations with parentheses (Opens a modal)
• Reasoning with linear equations (Opens a modal)
• Multi-step equations review (Opens a modal)
• Equations with parentheses Get 3 of 4 questions to level up!
• Equations with parentheses: decimals & fractions Get 3 of 4 questions to level up!
• Reasoning with linear equations Get 3 of 4 questions to level up!

Analyzing the number of solutions to linear equations

• Number of solutions to equations (Opens a modal)
• Worked example: number of solutions to equations (Opens a modal)
• Creating an equation with no solutions (Opens a modal)
• Creating an equation with infinitely many solutions (Opens a modal)
• Number of solutions to equations Get 3 of 4 questions to level up!
• Number of solutions to equations challenge Get 3 of 4 questions to level up!

Linear equations with unknown coefficients

• Linear equations with unknown coefficients (Opens a modal)
• Why is algebra important to learn? (Opens a modal)
• Linear equations with unknown coefficients Get 3 of 4 questions to level up!

Multi-step inequalities

• Inequalities with variables on both sides (Opens a modal)
• Inequalities with variables on both sides (with parentheses) (Opens a modal)
• Multi-step inequalities (Opens a modal)
• Using inequalities to solve problems (Opens a modal)
• Multi-step linear inequalities Get 3 of 4 questions to level up!
• Using inequalities to solve problems Get 3 of 4 questions to level up!

Compound inequalities

• Compound inequalities: OR (Opens a modal)
• Compound inequalities: AND (Opens a modal)
• A compound inequality with no solution (Opens a modal)
• Double inequalities (Opens a modal)
• Compound inequalities examples (Opens a modal)
• Compound inequalities review (Opens a modal)
• Solving equations & inequalities: FAQ (Opens a modal)
• Compound inequalities Get 3 of 4 questions to level up!

Examples for

Mathematics

Wolfram|Alpha has broad knowledge and deep computational power when it comes to math. Whether it be arithmetic, algebra, calculus, differential equations or anything in between, Wolfram|Alpha is up to the challenge. Get help with math homework, solve specific math problems or find information on mathematical subjects and topics.

Do basic arithmetic. Work with fractions, percentages and similar fundamentals. Solve place value and word problems.

Do basic arithmetic:

Do exact arithmetic with fractions:.

Compute the properties of geometric objects of various kinds in 2, 3 or higher dimensions. Explore and apply ideas from many subfields of geometry.

Compute properties of a geometric figure:

Plot a conic section and identify its type:, compute properties of a polyhedron:.

Work with various kinds of numbers. Check for membership in larger sets, such as the rationals or the transcendental numbers. Convert between bases.

Compute a decimal approximation to a specified number of digits:

Convert a decimal number to another base:.

Analyze integers; subsets of the integers, including the prime numbers; and related ideas.

Compute a prime factorization:

Solve a diophantine equation:.

Perform numerical analysis and optimization of systems and objects, including packing and covering of objects and control systems.

Minimize or maximize a function:

Numerically integrate functions that cannot be integrated symbolically:.

Make queries about various definitions and descriptions in mathematics.

Find information about a math concept:

Get a brief definition:.

Compute properties of datasets, perform statistical inference or model data. Work with probability distributions and random variables.

Calculate basic descriptive statistics for a data set:

Find the sample size needed to estimate a binomial parameter:.

Find roots of and expand, factor or simplify mathematical expressions—everything from polynomials to fields and groups.

Solve an equation:

Factor a polynomial:, simplify an expression:.

Solve differential equations of any order. Examine solutions and plots of the solution families. Specify initial conditions to find exact solutions.

Solve a linear ordinary differential equation:

Specify initial values:, solve a nonlinear equation:.

Perform trigonometric calculations and explore properties of trigonometric functions and identities.

Compute values of trigonometric functions:

Solve a trigonometric equation:.

Explore sequences and recurrences, solve common problems in combinatorics and compute properties of graphs and lattices.

Compute a possible formula and continuation for a sequence:

Analyze a graph specified by adjacency rules:, solve a recurrence:.

Evaluate Boolean logic expressions and expressions involving sets and set operators. Solve Boolean equations. Compute truth tables. Generate Venn diagrams.

Compute a truth table:

Generate a venn diagram:.

Gather information about famous problems, conjectures, theorems and paradoxes. Learn about them and their formulators.

Get information about a mathematical conjecture:

Get historical information about a theorem:.

Compute the probabilities of certain events occurring. Compute joint, disjoint or conditional probabilities and apply them to real-world situations.

Compute the probability of a union of events:

Compute coin‐toss probabilities:.

Compute integrals, derivatives and limits as well as analyze sums, products and series.

Compute an integral:

Calculate a derivative:, solve an ordinary differential equation:.

Visualize functions, equations and inequalities. Do so in 1, 2 or 3 dimensions. Make polar and parametric plots.

Plot a function:

Plot a region satisfying multiple inequalities:.

Explore and compute properties of vectors, matrices and vector spaces.

Compute properties of a vector:

Calculate properties of a matrix:, determine whether a set of vectors is linearly independent:.

Analyze functions and expressions containing imaginary numbers or complex variables.

Compute properties of a function of a complex variable (use the variable z ):

Compute the residue of a function at a point:.

Examine the properties of mathematical functions, such as continuity, surjectivity and parity. Utilize notable special functions or number theoretic functions.

Do computations with special functions:

Do computations with number theoretic functions:, find representations for a function:.

Compute; learn about algorithms, definitions and theorems involving; or find properties of continued fractions.

Find the continued fraction representation of a number:

Find definitions of continued fraction terminology:, find continued fraction papers by author:.

Get information about math Common Core Standards for kindergarten through eighth grade.

Evaluate an expression (CCSS.Math.Content.6.EE.A.2c):

Perform multiple operations with rational numbers (ccss.math.content.7.ns.a.2c):.

• Varsity Tutors
• K-5 Subjects
• Study Skills
• All AP Subjects
• AP Calculus
• AP Chemistry
• AP Computer Science
• AP Human Geography
• AP Macroeconomics
• AP Microeconomics
• AP Statistics
• AP US History
• AP World History
• All Business
• Business Calculus
• Microsoft Excel
• Supply Chain Management
• All Humanities
• Essay Editing
• All Languages
• Mandarin Chinese
• Portuguese Chinese
• Sign Language
• All Learning Differences
• Learning Disabilities
• Special Education
• College Math
• Common Core Math
• Elementary School Math
• High School Math
• Middle School Math
• Pre-Calculus
• Trigonometry
• All Science
• Organic Chemistry
• Physical Chemistry
• All Engineering
• Chemical Engineering
• Civil Engineering
• Computer Science
• Electrical Engineering
• Industrial Engineering
• Materials Science & Engineering
• Mechanical Engineering
• Thermodynamics
• Biostatistics
• College Essays
• High School
• College & Adult
• 1-on-1 Private Tutoring
• Online Tutoring
• Instant Tutoring
• Pricing Info
• All AP Exams
• ACT Tutoring
• ACT Reading
• ACT Science
• ACT Writing
• SAT Tutoring
• SAT Reading
• SAT Writing
• GRE Tutoring
• NCLEX Tutoring
• Real Estate License
• And more...
• StarCourses
• Beginners Coding
• Early Childhood
• For Schools Overview
• Talk with Our Team
• Reviews & Testimonials
• Press & Media Coverage
• Tutor/Instructor Jobs
• Corporate Solutions
• About Nerdy
• Become a Tutor

Concept Review Topics

• AA Similarity
• AAS Postulate
• Absolute Value
• Accuracy and Error
• Absolute Value of a Complex Number
• Absolute Value Functions
• Absolute Value Inequalities
• Adding and Subtracting Complex Numbers
• Adding and Subtracting Decimals
• Adding and Subtracting Fractions with Like Denominators
• Adding and Subtracting Fractions with Negatives
• Adding and Subtracting Fractions with Unlike Denominators
• Adding and Subtracting Fractions
• Adding and Subtracting Matrices
• Adding and Subtracting Negatives
• Adding and Subtracting Rational Expressions with Like Denominators
• Adding and Subtracting Rational Expressions with Unlike Denominators
• Adding and Subtracting Vectors
• Adding Fractions with Like Denominators
• Adding Fractions with Unlike Denominators
• Adding Fractions
• Adding and Subtracting Polynomials
• Addition Rule of Probability
• Addition: Whole Numbers
• Additive Inverse
• Adjacent Angles
• Adjoint of a Matrix
• Advanced Factoring
• Alternate Exterior Angles
• Alternate Exterior Angles Theorem
• Alternate Interior Angles
• Alternate Interior Angles Theorem
• Altitude of a Triangle
• Amplitude and Period of Sine and Cosine Functions
• Angle Addition Postulate
• Angle-Angle Similarity
• Angle Bisector Theorem
• Angle Bisector
• Angle of Intersecting Chords Theorem
• Angle of Intersecting Secants Theorem
• Angle of Rotation
• Angle Sum Theorem
• Angles of Elevation and Depression
• Area of a Circle
• Area of a Triangle
• Area Problem Solving
• Areas of Regular Polygons
• Arithmetic Sequences
• Arithmetic Series
• ASA Postulate
• Associative Property
• Associative Property of Matrices
• Augmented Matrices
• Axis of Symmetry of a Parabola
• Base (Exponential Notation)
• Base (Logarithms)
• Base (Number Systems)
• Basic Operations
• Basic Trigonometric Identities
• Biconditional Statement
• Big and Small Numbers
• Binary Numbers
• Binomial Probability
• Binomial Series
• Binomial Theorem
• Bisectors in a Triangle
• Box and Whisker Plots
• Cartesian Plane
• Center and Variation of Data
• Center of Rotation
• Central Angles
• Choosing Appropriate Units of Measure
• Circle Graphs
• Circles Inscribed in Squares
• Circumcenter Theorem
• Circumference
• Cofunction and Odd-Even Identities
• Collinear Points
• Combinations
• Combined Variation
• Combining Like Terms with Exponents
• Combining Like Terms
• Common Difference
• Common Ratio
• Commutative Property
• Comparing and Ordering Integers
• Comparing Decimals
• Comparing Fractions
• Comparing Functions
• Comparing Linear, Polynomial, and Exponential Growth
• Comparing Quantities
• Compatible Matrices
• Complement of an Event
• Complementary Angles
• Completing the Square
• Complex Numbers
• Components of a Vector
• Composite Numbers
• Composition of Functions
• Compound Events
• Compound Inequalities
• Compound Interest
• Conditional Probability
• Conditional Statements
• Congruent Angles
• Congruent Figures
• Congruent Segments
• Congruent Tangents and Circumscribed Polygons
• Congruent Triangles on the Coordinate Plane
• Congruent Triangles
• Conic Sections and Standard Forms of Equations
• Conjunction
• Consecutive Interior Angles Theorem
• Consistent and Dependent Systems
• Constant Function
• Constant of Variation
• Converse, Inverse and Contrapositive
• Converse of Isosceles Triangle Theorem
• Converse of Pythagorean Theorem
• Convert between Systems
• Convert Units of Area and Volume
• Converting Fractions to Decimals
• Converting Fractions to Percent
• Converting Non Repeating Decimals to Fractions
• Converting Repeating Decimals to Fractions
• Coordinate Proofs
• Correlation and Causal Relation
• Corresponding Angles
• Corresponding Angles Postulate
• Cosine Function
• Coterminal Angles
• Counter Example
• Cramer's Rule
• Cross Products
• Cross Sections
• Cubic Functions
• Customary Units
• Decimals an Introduction
• Decimals, Adding and Subtracting
• Decimals, Multiplying and Dividing
• Decimals, Terminating and Repeating
• Decimals, Rounding
• Decimals and Percentages
• Degree (of a Monomial)
• Degree (of a Polynomial)
• Degree (of a Vertex)
• Degree Measure of an Angle
• Degree to Radian Measure
• Denominator
• Dependent Events
• Descartes Rule of Signs
• Describing the Graph of a Function
• Determinants
• Developing a Probability Distribution from Empirical Data
• Diagonals of Parallelograms
• Difference of Squares
• Different Bases
• Direct and Inverse Variation
• Direct Variation
• Discriminants
• Disjunction
• Distance between Parallel Lines
• Distance Formula in 3D
• Distance Formula
• Distributive Property of Matrices
• Distributive Property
• Dividing by a Fraction
• Dividing Complex Numbers
• Dividing Decimals
• Dividing Fractions
• Dividing Polynomials
• Dividing Rational Expressions
• Divisibility Tests
• Division Whole Numbers
• Domain and Range of Exponential and Logarithmic Functions
• Domain and Range of Rational Functions
• Domain and Range
• Double-Angle and Half-Angle Identities
• e (the Number)
• Eccentricity
• End Behavior of a Function
• Endvertex (Graph Theory)
• Equation of a Circle
• Equation of a Plane
• Equivalent Expressions
• Equivalent Fractions
• Equivalent Ratios
• Evaluating Expressions
• Even and Odd Functions
• Expected Value
• Experimental Probability
• Exponent Tables and Patterns
• Exponential Decay
• Exponential Functions
• Exponential Growth
• Exponential Regression
• Exponential to Logarithmic Form
• Exterior Angle Inequality
• Exterior Angle Theorem
• Extraneous Solutions
• Factor Theorem
• Factoring: a ≠ 1
• Factoring: b & c Positive
• Factoring: b Negative
• Factoring: c Negative
• Factoring by Grouping
• Factoring Monomials
• Falling Objects
• Fibonacci Numbers
• Finding Arc Lengths
• Finding the Area of a Triangle Using Sine
• Finding the Equation of a Line from Its Graph
• Finding the Equation of a Parabola given Focus and Directrix
• Finite Differences
• Fitting Equations to Data
• Fitting Linear Equations to Data
• Focus of a Parabola
• 45-45-90 Triangles
• Fraction Operations
• Frequency Distributions
• Functions Describing Behavior
• Functions: Graphs and Intersections
• Fundamental Counting Principle
• Fundamental Theorem of Algebra
• Gathering Like Terms
• Geometric Mean
• Geometric Probability
• Geometric Sequences
• Geometric Series
• Golden Ratio
• Golden Rectangle
• Graphing Exponential and Logarithmic Functions
• Graphing Exponential Functions
• Graph Theory
• Graphing Cosine Function
• Graphing Functions of the Form x^n
• Graphing Inequalities in One Variable
• Graphing Linear Equations
• Graphing Linear Inequalities in Two Variables
• Graphing Logarithmic Functions
• Graphing Polygons
• Graphing Polynomial Functions
• Graphing Quadratic Equations Using Factoring
• Graphing Quadratic Equations Using the Axis of Symmetry
• Graphing Quadratic Equations Using Transformations
• Graphing Quadratic Equations
• Graphing Quadratic Inequalities
• Graphing Rational Functions
• Graphing Scale and Origin
• Graphing Sine Function
• Graphing Square Root Functions
• Graphing Systems of Linear Inequalities
• Graphing Tangent Function
• Greatest Common Factors (GCFs)
• Greatest Common Factor of Monomials
• Hexadecimal Numbers
• Horizontal Lines
• Identity Matrix
• i(imaginary unit)
• Improper Fractions
• Independent/Dependent Events
• Independent Events
• Indirect Proof
• Inductive Reasoning
• Inequalities
• Infinite Geometric Series
• Input-Output Tables
• Inscribed Angles
• Inscribing a Quadrilateral
• Interpreting Data
• Interquartile
• Intersecting Chords Theorem
• Intersecting Chords
• Intersecting Secant-Tangent Theorem
• Intersecting Secants Theorem
• Interval Notation
• Inverse Functions
• Inverse Matrices
• Inverse Operations
• Inverse Trigonometric Functions
• Inverse Variation
• Irrational Numbers
• Irreducible Polynomials
• Isosceles Triangle Theorem
• Joint Variation
• Latus Rectum
• Law of Cosines
• Law of Detachment
• Law of Sines
• Law of Syllogism
• Leading Coefficient Test
• Least Common Denominators (LCDs)
• Least Common Multiples (LCMs)
• Line Graphs
• Line of best fit
• Line of best fit(Eyeball Method)
• Line Symmetry
• Linear Equations, Graphing
• Linear Equations, Solving
• Linear Equations, Systems of
• Linear Function
• Linear Pair
• Linear Programming
• Logarithmic Functions
• Logarithmic to Exponential Form
• Lowest Terms
• Magnitude and Direction of Vectors
• Major and Minor Axes of Conics
• Mapping Diagrams
• Matrix Dimensions
• Matrix Multiplication
• Matrix Row Operations
• Mean, Median and Mode
• Medians of a Triangle
• Metric System
• Midpoint Formula
• Midsegment of a Trapezoid
• Mixed Expressions
• Mixed Numbers: Addition
• Mixed Numbers: Division
• Mixed Numbers: Multiplication
• Mixed Numbers: Subtraction
• Mixed Numbers
• More on Hyperbolas
• Multiplication Rule of Probability
• Multiplication: Whole Numbers
• Multiplicative Inverse
• Multiplying a Fraction by a Fraction
• Multiplying a Fraction by an Integer
• Multiplying and Dividing with Decimals
• Multiplying and Dividing with Negatives
• Multiplying Complex Numbers
• Multiplying Decimals
• Multiplying Monomials
• Multiplying Polynomials
• Multiplying Rational Expressions
• Multiplying Vector by a Matrix
• Mutually Exclusive Events
• Natural Logarithm
• Natural Numbers
• Negative Exponents
• Normal Distribution of data
• nth Term of a Geometric Sequence
• nth Term of an Arithmetic Sequence
• nth Term of a Sequence
• Number Line
• Number Systems
• Odds (Probability)
• One to One Functions
• Operations on Functions
• Operations on Mixed Numbers
• Operations on Sets
• Operations with Complex Numbers
• Operations with Decimals
• Operations with Fractions
• Operations with Negatives
• Ordered Pair
• Order of Operations
• Parabolas as Conic Sections
• Parallel Lines and Proportionality
• Parallel Lines and Slopes
• Parallel Lines and Transversals
• Parallel Lines
• Parallel and Perpendicular Lines
• Parallelogram
• Parametric Equations
• Parent Graphs
• Partioning a Segment in a given Ratio
• Parts of an Expression
• Pascal's Triangle
• Percent Increase and Decrease
• Percents and Decimals
• Percents and Fractions
• Perfect Numbers
• Perfect Squares
• Perimeter, Area and Volume
• Periodic Functions
• Permutations
• Perpendicular Bisector
• Perpendicular Lines and Slopes
• Perpendicular Lines
• Perpendicular Transversal Theorem
• Piecewise-Defined Function
• Place Value: Decimals
• Place Value
• Platonic Solids
• Point-Slope Form (of a Linear Equation)
• Polar Coordinates
• Polar Form of a Complex Number
• Polygon Exterior Angle Sum Theorem
• Polygon Interior Angles Sum Theorem
• Polynomial Function
• Polynomial with Complex Roots
• Power of a Power Property
• Power of a Product Property
• Power of a Quotient Property
• Power Series and Radius of Convergence
• Powers of 10
• Powers of i
• Prime and Composite Numbers
• Prime Factorization
• Prime Numbers
• Principal Value of a Square Root
• Probability Distribution
• Probability Models
• Probability
• Product of a Sum and a Difference
• Product of Powers Property
• Properties of Addition
• Properties of Congruence
• Properties of Equality
• Properties of Exponents
• Properties of Inequality
• Properties of Multiplication
• Properties of Square Roots
• Proportional Relationships
• Proportions
• Pythagorean Theorem
• Pythagorean Triples
• Quadratic Equations
• Quadratic Equations, Solving by Completing the Square
• Quadratic Equations, Solving by Factoring
• Quadratic Equations, Solving by Square Roots
• Quadratic Formula
• Quadratic Function
• Quadratic Regression
• Quadrilaterals
• Quotient of Powers Property
• Radian Measure of an Angle
• Radian to Degree Measure
• Radical Expressions
• Radical Equations
• Radius of Convergence
• Random Sampling
• Random Variable
• Range (of Data)
• Rate of Change
• Range (of a Function)
• Rate-Time-Distance Problems
• Rates and Ratios
• Rational Equations
• Rational Exponents
• Rational Functions
• Rational Expressions
• Rational Numbers
• Rationalizing the Denominator by Multiplying by a Conjugate
• Rationalizing the Denominator
• Real Numbers
• Real Zero of a Function
• Reciprocals
• Recursive Sequence
• Reduced Radical Form
• Reducing Fractions
• Reference Angle
• Reflections
• Reflexive, Symmetric, Transitive Properties
• Relatively Prime Numbers
• Remainder Theorem
• Repeated Zeros
• Representing Systems of Linear Equations using Matrices
• Repeating Decimals
• Right Triangle Congruence
• Right Triangle Similarity
• Rotational Symmetry
• Rounding Decimals
• Rounding Numbers
• Sample Space
• SAS Inequality
• SAS Postulate
• SAS Similarity
• Scalar Multiplication of Matrices
• Scalar Multiplication of Vectors
• Scale Drawings
• Scale Factor
• Scalene Triangle
• Scatter Plots
• Scientific Notation
• Segment Addition Postulate
• Shortest Distance between a Point and a Circle
• Side-Angle-Side Similarity
• Side-Side-Side Similarity
• Sigma Notation of a Series
• Significant Digits
• Similar Figures
• Similar Triangles
• Simple Interest
• Simplest Form (of a Fraction)
• Simplifying Absolute Value Expressions
• Simplifying Expressions
• Simplifying Logarithmic Expressions
• Simplifying Radical Expressions Involving Products
• Simplifying Radical Expressions with Variables
• Simplifying Radical Expressions
• Simplifying Rational Expressions
• Simplifying Square Roots
• Sine Function
• Slant Height of a Pyramid
• Slope-Intercept Form (of a Linear Equation)
• Solution Sets
• Solving Absolute Value Equations
• Solving Equations: Basic
• Solving Equations
• Solving Exponential Equations using Logarithms
• Solving Exponential Equations
• Solving Linear Equations
• Solving Linear Inequalities
• Solving Linear Quadratic Systems
• Solving Logarithmic Equations
• Solving Matrix Equations
• Solving Multi-Step Linear Equations with Decimals
• Solving Multi-Step Linear Equations with Fractions
• Solving Multi-Step Linear Equations
• Solving One-Step Linear Equations: Addition
• Solving One-Step Linear Equations: Division
• Solving One-Step Linear Equations with Decimals
• Solving One-Step Linear Equations with Fractions
• Solving One-Step Linear Equations with Mixed Numbers: Addition
• Solving One-Step Linear Equations with Mixed Numbers: Division
• Solving One-Step Linear Equations with Mixed Numbers: Multiplication
• Solving One-Step Linear Equations with Mixed Numbers: Subtraction
• Solving One-Step Linear Equations with Mixed Numbers
• Solving One-Step Linear Equations
• Solving One-Step Linear Inequalities
• Solving One-Step Linear Equations: Multiplication
• Solving One-Step Linear Equations: Subtraction
• Solving Problems with Vectors
• Solving Quadratic Equations by Square Roots
• Solving Quadratic Equations using Factoring
• Solving Radical Equations
• Solving Rational Equations
• Solving Systems of Linear Equations Using Elimination
• Solving Systems of Linear Equations Using Graphing
• Solving Systems of Linear Equations
• Solving Systems of Linear Equations Using Matrices
• Solving Systems of Linear Equations Using Substitution
• Solving Trigonometric Equations using Algebraic Method
• Solving Trigonometric Equations using Trigonometric Identities
• Solving Two-Step Linear Equations with Decimals
• Solving Two-Step Linear Equations with Fractions
• Solving Two-Step Linear Equations
• Solving Two-Step Linear Inequalities
• Squares Circumscribed by Circles
• Square Matrix
• Square of a Binomial
• Square Roots
• sss Inequality
• sss Postulate
• sss Similarity
• Standard Deviation
• Standard Form (of a Linear Equation)
• Statistical Questions
• Stem-and-Leaf Plots
• Step Function
• Subtracting Fractions with Like Denominators
• Subtracting Fractions with Unlike Denominators
• Subtracting Fractions
• Subtraction: Whole Numbers
• Sum and Difference Identities
• Sum and Difference of Cubes
• Sum of the First n Terms of a Geometric Sequence
• Sum of the First n Terms of a Geometric Series
• Sum of the First n Terms of an Arithmetic Sequence
• Sum of the First n Terms of an Arithmetic Series
• Sum of the First n Terms of a Series
• Sum-to-Product and Product-to-Sum Identities
• Supplementary Angles
• Supplement Postulate
• Surface Area
• Surface Area of a Cone
• Surface Area of a Cylinder
• Surface Area of a Prism
• Surface Area of a Pyramid
• Surface Area of a Sphere
• Symbolic Logic
• Systems of Linear Equations
• Systems of Linear Inequalities
• Tangent Function
• Tangent of an Angle
• Tangent Line
• Tangent to a Circle
• Taylor Series
• Temperature
• Term of a Sequence
• Terminating and Repeating Decimals
• Tessellations
• 30-60-90 Triangles
• Traceability of Graphs
• Transcendental Numbers
• Transformation of Graphs using Matrices - Translation
• Transformation of Graphs using Matrices - Dilation
• Transformation of Graphs using Matrices - Reflection
• Transformation of Graphs using Matrices - Rotations
• Transformation of Graphs using Matrices
• Transformations of Functions
• Transformations of Graphs
• Translations
• Transversal
• Triangle Angle Bisector Theorem
• Triangle Inequality Theorem
• Triangle Midsegment Theorem
• Triangle Proportionality Theorem
• Trigonometric Functions
• Trigonometric Identities
• Trigonometric Ratios
• Trigonometric Values for Common Angles
• Two Dimensional Views of Three Dimensional Objects
• Unit Analysis
• Unit Vectors
• Using Expected Values to Make Decisions
• Using Probabilities to Make Fair Decisions
• Values of Trigonometric Ratios for Common Angles
• Values of Trigonometric Ratios for Standard Angles
• Variation of Data
• Venn Diagrams
• Vertex of a Parabola
• Vertical Angles
• Vertical Angles Theorem
• Vertical Line Test
• Vertical Lines
• Volume of a Cone
• Volume of a Cylinder
• Volume of a Prism
• Volume of a Pyramid
• Volume of a Sphere
• Weight Mass
• Whole Numbers
• Word Problems: Area and Perimeter of a Rectangle
• Word Problems: Equivalent Expressions
• Word Problems: Expected Value
• Word Problems Inverse Variation
• Word Problems Involving Decimals
• Word Problems Involving Integers
• Word Problems Involving One Step Linear Equations
• Word Problems Involving the Distributive Property
• Word Problems Involving the Mean of a Data Set
• Word Problems Involving Percent
• Word Problems Two Step Linear Equations
• Word Problems Involving Width, Length and Area
• Word Problems: Linear Models
• Word Problems: Plotting Points
• Word Problems: Quadratic Equations
• Word Problems: Ratios
• Word Problems: Work and Workers
• Word Problems
• Writing Number Patterns in Function Notation
• Writing Systems of Linear Equations from Word Problems
• x -Intercepts of a Quadratic Function
• x -Intercepts
• y -Intercepts a2 level
• y -Intercepts
• Yang Huis Triangle
• Zero Exponents
• Zero to the Power of Zero
• Zero Product Property

Download our free learning tools apps and test prep books

Math Calculator

Enter the expression you want to evaluate.

Please ensure that your password is at least 8 characters and contains each of the following:

• a special character: @$#!%*?&

Want Better Math Grades?

✅ Unlimited Solutions

✅ Step-by-Step Answers

✅ Available 24/7

➕ Free Bonuses ($1085 value!)

Chapter Contents ⊗

• Search IntMath
• Math interactives
• About (site info)
• Uses of Trignometry
• ASCIIMath input, KaTeX output
• ASCIIMath input, LaTeX and KaTeX output
• Send Math in emails
• Syntax for ASCIIMathML
• Math Display Experiments
• Scientific Notebook

Math Problem Solver

Math Tutoring

Need help? Chat with a tutor anytime, 24/7 .

Chat Now »

🤖 Math Solver & Calculator

This tool combines the power of mathematical computation engine that excels at solving mathematical formulas with the power of artificial intelligence large language models to parse and generate natural language answers. This creates a math problem solver that's more accurate than ChatGPT, more flexible than a math calculator, and provides answers faster than a human tutor.

Sign up for free here .

Problem Solver Subjects

Our math problem solver that lets you input a wide variety of math math problems and it will provide a step by step answer. This math solver excels at math word problems as well as a wide range of math subjects.

• Math Word Problems
• Pre-Algebra
• Geometry Graphing
• Trigonometry
• Precalculus
• Finite Math
• Linear Algebra

Here are example math problems within each subject that can be input into the calculator and solved. This list is constanstly growing as functionality is added to the calculator.

Basic Math Solutions

Below are examples of basic math problems that can be solved.

• Long Arithmetic
• Rational Numbers
• Operations with Fractions
• Ratios, Proportions, Percents
• Measurement, Area, and Volume
• Factors, Fractions, and Exponents
• Unit Conversions
• Data Measurement and Statistics
• Points and Line Segments

Math Word Problem Solutions

Math word problems require interpreting what is being asked and simplifying that into a basic math equation. Once you have the equation you can then enter that into the problem solver as a basic math or algebra question to be correctly solved. Below are math word problem examples and their simplified forms.

Word Problem: Rachel has 17 apples. She gives some to Sarah. Sarah now has 8 apples. How many apples did Rachel give her?

Simplified Equation: 17 - x = 8

Word Problem: Rhonda has 12 marbles more than Douglas. Douglas has 6 marbles more than Bertha. Rhonda has twice as many marbles as Bertha has. How many marbles does Douglas have?

Variables: Rhonda's marbles is represented by (r), Douglas' marbles is represented by (d) and Bertha's marbles is represented by (b)

Simplified Equation: {r = d + 12, d = b + 6, r = 2 × b}

Word Problem: if there are 40 cookies all together and Angela takes 10 and Brett takes 5 how many are left?

Simplified: 40 - 10 - 5

Pre-Algebra Solutions

Below are examples of Pre-Algebra math problems that can be solved.

• Variables, Expressions, and Integers
• Simplifying and Evaluating Expressions
• Solving Equations
• Multi-Step Equations and Inequalities
• Ratios, Proportions, and Percents
• Linear Equations and Inequalities

Algebra Solutions

Below are examples of Algebra math problems that can be solved.

• Algebra Concepts and Expressions
• Points, Lines, and Line Segments
• Simplifying Polynomials
• Factoring Polynomials
• Linear Equations
• Absolute Value Expressions and Equations
• Radical Expressions and Equations
• Systems of Equations
• Quadratic Equations
• Inequalities
• Complex Numbers and Vector Analysis
• Logarithmic Expressions and Equations
• Exponential Expressions and Equations
• Conic Sections
• Vector Spaces
• 3d Coordinate System
• Eigenvalues and Eigenvectors
• Linear Transformations
• Number Sets
• Analytic Geometry

Trigonometry Solutions

Below are examples of Trigonometry math problems that can be solved.

• Algebra Concepts and Expressions Review
• Right Triangle Trigonometry
• Radian Measure and Circular Functions
• Graphing Trigonometric Functions
• Simplifying Trigonometric Expressions
• Verifying Trigonometric Identities
• Solving Trigonometric Equations
• Complex Numbers
• Analytic Geometry in Polar Coordinates
• Exponential and Logarithmic Functions
• Vector Arithmetic

Precalculus Solutions

Below are examples of Precalculus math problems that can be solved.

• Operations on Functions
• Rational Expressions and Equations
• Polynomial and Rational Functions
• Analytic Trigonometry
• Sequences and Series
• Analytic Geometry in Rectangular Coordinates
• Limits and an Introduction to Calculus

Calculus Solutions

Below are examples of Calculus math problems that can be solved.

• Evaluating Limits
• Derivatives
• Applications of Differentiation
• Applications of Integration
• Techniques of Integration
• Parametric Equations and Polar Coordinates
• Differential Equations

Statistics Solutions

Below are examples of Statistics problems that can be solved.

• Algebra Review
• Average Descriptive Statistics
• Dispersion Statistics
• Probability
• Probability Distributions
• Frequency Distribution
• Normal Distributions
• t-Distributions
• Hypothesis Testing
• Estimation and Sample Size
• Correlation and Regression

Finite Math Solutions

Below are examples of Finite Math problems that can be solved.

• Polynomials and Expressions
• Equations and Inequalities
• Linear Functions and Points
• Systems of Linear Equations
• Mathematics of Finance
• Statistical Distributions

Linear Algebra Solutions

Below are examples of Linear Algebra math problems that can be solved.

• Introduction to Matrices
• Linear Independence and Combinations

Chemistry Solutions

Below are examples of Chemistry problems that can be solved.

• Unit Conversion
• Atomic Structure
• Molecules and Compounds
• Chemical Equations and Reactions
• Behavior of Gases
• Solutions and Concentrations

Physics Solutions

Below are examples of Physics math problems that can be solved.

• Static Equilibrium
• Dynamic Equilibrium
• Kinematics Equations
• Electricity
• Thermodymanics

Geometry Graphing Solutions

Below are examples of Geometry and graphing math problems that can be solved.

• Step By Step Graphing
• Linear Equations and Functions
• Polar Equations

Looking for the old Mathway Calculator? We've moved it to here .

This tool combines the power of mathematical computation engine that excels at solving mathematical formulas with the power of GPT large language models to parse and generate natural language. This creates math problem solver thats more accurate than ChatGPT, more flexible than a calculator, and faster answers than a human tutor. Learn More.

Tips, tricks, lessons, and tutoring to help reduce test anxiety and move to the top of the class.

Email Address Sign Up

Free Algebra Questions and Problems with Answers

Free intermediate and college algebra questions and problems are presented along with answers and explanations. Free worksheets to download are also included.

Intermediate Algebra Questions with Answers

• sample 1 .(student generated solutions). Also included are the solutions with full explanations .
• sample 2 .(True / False type). Also included are the solutions with full explanations .
• sample 3 .(student generated solutions). solutions with full explanations are included.
• sample 4 .(True / False type). solutions with full explanations included.
• sample 5 .(Multiple choice questions type). Also included are the solutions with full explanations .
• sample 6 .(True / False type). solutions with full explanations included.

Intermediate Algebra Problems with Detailed Solutions

• Algebra Problems .
• Intermediate Algebra Problems With Answers - sample 1 : equations, system of equations, percent problems, relations and functions.
• Intermediate Algebra Problems With Answers - sample 2 :Find equation of line, domain and range from graph, midpoint and distance of line segments, slopes of perpendicular and parallel lines.
• Intermediate Algebra Problems With Answers - sample 3 : equations and system of equations, quadratic equations, function given by a table, intersections of lines, problems.
• Intermediate Algebra Problems With Answers - sample 4 . Functions, domain, range, zeros.
• Intermediate Algebra Problems With Answers - sample 5 . Scientific Notation
• Intermediate Algebra Problems With Answers - sample 6 . Equations of Lines
• Intermediate Algebra Problems With Answers - sample 7 . Slopes of Lines
• Intermediate Algebra Problems With Answers - sample 8 . Absolute Value Expressions
• Intermediate Algebra Problems With Answers - sample 9 . Solve Absolute Value Equations
• Intermediate Algebra Problems With Answers - sample 10 . Solve Absolute Value Inequalities
• Intermediate Algebra Problems With Answers - sample 11 . Simplify Algebraic Expressions by Removing Brackets
• Intermediate Algebra Problems With Answers - sample 12 . Simplify Algebraic Expressions with Exponents

Intermediate Algebra Worksheets

• Worksheet (1) .
• Worksheet (2) .
• Worksheet (3) .
• Worksheet (4) .
• Worksheet (5) .
• Worksheet (6) .

College Algebra Questions with Answers

• sample 1 .(multiple choice questions). Also Detailed solutions with full explanations are included
• sample 2 . (multiple choice questions)

College Algebra Problems with Answers

• sample 1: Quadratic Functions .
• sample 2: Composite and Inverse Functions .
• sample 3: Exponential and Logarithmic Functions .
• sample 4: Graphs of Functions .
• sample 5: Find Domain and Range of Functions .
• sample 6: Problems on Polynomials : Graphs, Factoring, Finding, Multiplying, Dividing, Factor theorem, Zeros
• sample 7: Equation of Circle : Finding equations, center, radius of circles
• sample 8: Equation of Ellipse : Finding equations, foci, center, vertices of ellipses
• sample 9: Equation of Parabola : Finding equations, focus, vertex, axis, directrix of parabola.
• sample 10: Equation of Hyperbola : Finding equations, foci, center and vertices of hyperbola.

College Algebra Worksheets

• Worksheet (1): Graphs of Basic Functions .
• Worksheet (2): Exponential Growth and Decay Problems .
• Worksheet (3): Graphing Exponential Functions .
• Worksheet (4): Graphing Logarithmic Functions .
• Worksheet (5): Solve Exponential Equations .
• Worksheet (6): Solve Logarithmic Equations .
• Worksheet (7): Multiple Choice Questions on Polynomials and Solutions
• Worksheet (8): Multiple Choice Questions on Rational Functions and Solutions .
• Worksheet (9): Graphing Inverse Functions .

Math Problem Answers

Math problem answers are solved here step-by-step to keep the explanation clear to the students. In Math-Only-Math you'll find abundant selection of all types of math questions for all the grades with the complete step-by-step solutions.

Parents and teachers can follow math-only-math to help their students to improve and polish their knowledge. Children can practice the worksheets of all the grades and on all the topics to increase their knowledge.

Various types of Math Problem Answers are solved here.

1. Mrs. Rodger got a weekly raise of $145. If she gets paid every other week, write an integer describing how the raise will affect her paycheck.

Let the 1st paycheck be x (integer). Mrs. Rodger got a weekly raise of $ 145. So after completing the 1st week she will get $ (x+145). Similarly after completing the 2nd week she will get $ (x + 145) + $ 145. = $ (x + 145 + 145) = $ (x + 290) So in this way end of every week her salary will increase by $ 145.

3. Mr. Jones sold two pipes at $1.20 each. Based on the cost, his profit one was 20% and his loss on the other was 20%. On the sale of the pipes, he: (a) broke even, (b) lost 4 cents, (c) gained 4 cents, (d) lost 10 cents, (e) gained 10 cents Solution:

Selling price of the first pipe = $1.20

Profit = 20%

Let’s try to find the cost price of the first pipe

CP = Selling price - Profit

CP = 1.20 - 20% of CP

CP = 1.20 - 0.20CP

CP + 0.20CP = 1.20

1.20CP = 1.20

CP = \(\frac{1.20}{1.20}\)

Selling price of the Second pipe = $1.20

Let’s try to find the cost price of the second pipe

CP = Selling price + Loss

CP = 1.20 + 20% of CP

CP = 1.20 + 0.20CP

CP - 0.20CP = 1.20

0.80CP = 1.20

CP = \(\frac{1.20}{0.80}\)

Therefore, total cost price of the two pipes = $1.00 + $1.50 = $2.50

 And total selling price of the two pipes = $1.20 + $1.20 = $2.40

Loss = $2.50 – $2.40 = $0.10

Therefore, Mr. Jones loss 10 cents.

Answer:   (d) 

5. A man has $ 10,000 to invest. He invests $ 4000 at 5 % and $ 3500 at 4 %. In order to have a yearly income of $ 500, he must invest the remainder at: (a) 6 % , (b) 6.1 %, (c) 6.2 %, (d) 6.3 %, (e) 6.4 % Solution: Income from $ 4000 at 5 % in one year = $ 4000 of 5 %. = $ 4000 × 5/100. = $ 4000 × 0.05. = $ 200. Income from $ 3500 at 4 % in one year = $ 3500 of 4 %. = $ 3500 × 4/100. = $ 3500 × 0.04. = $ 140. Total income from 4000 at 5 % and 3500 at 4 % = $ 200 + $ 140 = $ 340. Remaining income amount in order to have a yearly income of $ 500 = $ 500 - $ 340. = $ 160. Total invested amount = $ 4000 + $ 3500 = $7500. Remaining invest amount = $ 10000 - $ 7500 = $ 2500. We know that, Interest = Principal × Rate × Time Interest = $ 160, Principal = $ 2500, Rate = r [we need to find the value of r], Time = 1 year. 160 = 2500 × r × 1. 160 = 2500r 160/2500 = 2500r/2500 [divide both sides by 2500] 0.064 = r r = 0.064 Change it to a percent by moving the decimal to the right two places r = 6.4 % Therefore, he invested the remaining amount $ 2500 at 6.4 % in order to get $ 500 income every year. Answer: (e) 6. Jones covered a distance of 50 miles on his first trip. On a later trip he traveled 300 miles while going three times as fast. His new time compared with the old time was: (a) three times as much, (b) twice as much, (c) the same, (d) half as much, (e) a third as much Solution: Let speed of the 1st trip x miles / hr. and speed of the 2nd trip 3x / hr. We know that Speed = Distance/Time. Or, Time = Distance/Speed. So, times taken to covered a distance of 50 miles on his first trip = 50/x hr. And times taken to covered a distance of 300 miles on his later trip = 300/3x hr. = 100/x hr. So we can clearly see that his new time compared with the old time was: twice as much. Answer: (b)

11. Kalin walks at a constant rate of 5/8  kilometers per hour. The beach is 3/4 kilometers from his home. How long does it take Kalin to walk from his home to the beach?

Speed =  \(\frac{5}{8}\) kilometers per hour.

Distance =  \(\frac{3}{4}\) kilometers

Distance =  Speed × Time

or, Time = Distance/Speed

            = (\(\frac{3}{4}\) ÷ \(\frac{5}{8}\)) hours

            = (\(\frac{3}{4}\) × \(\frac{8}{5}\)) hours

            = \(\frac{24}{20}\) hours

            = \(\frac{6}{5}\) hours

            = 1\(\frac{1}{5}\) hours

Answer:  1\(\frac{1}{5}\) hours

Unsolved Questions:

1. Fahrenheit temperature F is a linear function of Celsius temperature C. The ordered pair (0, 32) is an ordered pair of this function because 0°C is equivalent to 32°F, the freezing point of water. The ordered pair (100, 212) is also an ordered pair of this function because 100°C is equivalent to 212° F, the boiling point of water.

2. A sports field is 300 feet long. Write a formula that gives the length of x sports fields in feet. Then use this formula to determine the number of sports fields in 720 feet.

3. A recipe calls for 2 1/2 cups and I want to make 1 1/2 recipes. How many cups do I need?

4. Mario answered 30% of the questions correctly. The test contained a total of 80 questions. How many questions did Mario answer correctly?

5. Mary’s credit card company charges 16% interest on her outstanding credit card balance each month. Her minimum payment is $20 each month. Mary’s credit card bill is $70 in January. Mary only pays the minimum amount each month, and she does not spend any additional money on her credit card. How long, in months, will it take her to pay off her bill from January?

● Math Questions Answers

● Help with Math Problems ● Answer Math Problems ● Math Problem Solver ● Math Unsolved Questions ● Math Questions ● Math Word Problems ● Word Problems on Speed Distance Time ● Algebra Word Problems – Money

From Math Problem Answers to HOME PAGE

New! Comments

Didn't find what you were looking for? Or want to know more information about Math Only Math . Use this Google Search to find what you need.

• Preschool Activities
• Kindergarten Math
• 1st Grade Math
• 2nd Grade Math
• 3rd Grade Math
• 4th Grade Math
• 5th Grade Math
• 6th Grade Math
• 7th Grade Math
• 8th Grade Math
• 9th Grade Math
• 10th Grade Math
• 11 & 12 Grade Math
• Concepts of Sets
• Probability
• Boolean Algebra
• Math Coloring Pages
• Multiplication Table
• Cool Maths Games
• Math Flash Cards
• Online Math Quiz
• Math Puzzles
• Binary System
• Math Dictionary
• Conversion Chart
• Homework Sheets
• Math Problem Ans
• Free Math Answers
• Printable Math Sheet
• Funny Math Answers
• Employment Test
• Math Patterns
• Link Partners
• Privacy Policy

Recent Articles

Types of Lines |Straight Lines|Curved Lines|Horizontal Lines| Vertical

Nov 30, 23 01:08 PM

1 to 10 Times Tables | 1 - 10 Times Table Chart |Multiplication Tables

Nov 30, 23 01:26 AM

Half Past an Hour | What does Half Past Mean? | Half an Hour|Half Past

Nov 30, 23 12:41 AM

© and ™ math-only-math.com. All Rights Reserved. 2010 - 2023.

Home - English - Math - Reading - Research - Keys -  Newsworthy - Links - Contact

Search RHL School and EdHelperNet:

Math Problem Solving, Volume 8:

Math Problem Solving, Volume 7:

Computation Worksheets

Christmas and More

START YOUR DAY HERE >>

Math Problem Solving, Volume 6:

Mathematics Problem Solving, Volumes 1 - 4

Times Facts Sheet

Home - English - Math - Reading - Research - Search - Keys - Links - Contact - Terms - Privacy

Free math worksheets that are truly unique!

Copyright 1996-2010 RHL .... . Teachers, parents, and other educators may print and copy worksheets for their students. Any other reproduction or republishing of material from this site, in hard copy or electronic form, without written permission, is prohibited.

Game Central

Related Concepts

• MATLAB Answers
• Community Home
• File Exchange
• Discussions
• AI Chat Playground
• Communities
• Treasure Hunt
• Virtual Badges
• MATLAB FAQs
• Contributors
• Recent Activity
• Flagged Content
• Manage Spam
• Trial software

You are now following this question

• You will see updates in your followed content feed .
• You may receive emails, depending on your communication preferences .

Preprocessing when solving generalized eigenvalue problems using the eigs function

Direct link to this question

https://in.mathworks.com/matlabcentral/answers/2053647-preprocessing-when-solving-generalized-eigenvalue-problems-using-the-eigs-function

   1 Comment Show None Hide None

Direct link to this comment

https://in.mathworks.com/matlabcentral/answers/2053647-preprocessing-when-solving-generalized-eigenvalue-problems-using-the-eigs-function#comment_2981557

• Start off using Anew = inv(R)*A*inv(R)', with B = R'*R
• The algorithm looks like this:

Sign in to comment.

Sign in to answer this question.

Answers (0)

• smallestabs
• smallestreal

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

An Error Occurred

Unable to complete the action because of changes made to the page. Reload the page to see its updated state.

Select a Web Site

Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .

You can also select a web site from the following list

How to Get Best Site Performance

Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.

• América Latina (Español)
• Canada (English)
• United States (English)
• Belgium (English)
• Denmark (English)
• Deutschland (Deutsch)
• España (Español)
• Finland (English)
• France (Français)
• Ireland (English)
• Italia (Italiano)
• Luxembourg (English)
• Netherlands (English)
• Norway (English)
• Österreich (Deutsch)
• Portugal (English)
• Sweden (English)
• United Kingdom (English)

Asia Pacific

• Australia (English)
• India (English)
• New Zealand (English)
• 简体中文 Chinese
• 日本 Japanese (日本語)
• 한국 Korean (한국어)

Contact your local office

• MATLAB Answers
• File Exchange
• AI Chat Playground
• MATLAB に関する FAQ

現在この質問をフォロー中です

• フォローしているコンテンツ フィード に更新が表示されます。
• コミュニケーション基本設定 に応じて電子メールを受け取ることができます。

Solving a quadratic optimization problem subjected to linear constraints

この質問への直接リンク

https://jp.mathworks.com/matlabcentral/answers/2053162-solving-a-quadratic-optimization-problem-subjected-to-linear-constraints

   0 件のコメント -1 件の古いコメントを表示 -1 件の古いコメントを非表示

サインインしてコメントする。

サインインしてこの質問に回答する。

この回答への直接リンク

https://jp.mathworks.com/matlabcentral/answers/2053162-solving-a-quadratic-optimization-problem-subjected-to-linear-constraints#answer_1361602

   2 件のコメント 1 件の古いコメントを表示 1 件の古いコメントを非表示

このコメントへの直接リンク

https://jp.mathworks.com/matlabcentral/answers/2053162-solving-a-quadratic-optimization-problem-subjected-to-linear-constraints#comment_2981567

https://jp.mathworks.com/matlabcentral/answers/2053162-solving-a-quadratic-optimization-problem-subjected-to-linear-constraints#comment_2981622

その他の回答 (0 件)

• curve fitting
• optimization
• Optimization Toolbox
• Statistics and Machine Learning Toolbox

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

ページに変更が加えられたため、アクションを完了できません。ページを再度読み込み、更新された状態を確認してください。

Web サイトを選択すると、翻訳されたコンテンツにアクセスし、地域のイベントやサービスを確認できます。現在の位置情報に基づき、次のサイトの選択を推奨します:

また、以下のリストから Web サイトを選択することもできます。

最適なサイトパフォーマンスの取得方法

中国のサイト (中国語または英語) を選択することで、最適なサイトパフォーマンスが得られます。その他の国の MathWorks のサイトは、お客様の地域からのアクセスが最適化されていません。

• América Latina (Español)
• Canada (English)
• United States (English)
• Belgium (English)
• Denmark (English)
• Deutschland (Deutsch)
• España (Español)
• Finland (English)
• France (Français)
• Ireland (English)
• Italia (Italiano)
• Luxembourg (English)
• Netherlands (English)
• Norway (English)
• Österreich (Deutsch)
• Portugal (English)
• Sweden (English)
• United Kingdom (English)
• Australia (English)
• India (English)
• New Zealand (English)
• 简体中文 Chinese
• 日本 Japanese (日本語)
• 한국 Korean (한국어)

最寄りの営業オフィスへのお問い合わせ

• MATLAB Answers
• Community Home
• File Exchange
• Discussions
• AI Chat Playground
• Communities
• Treasure Hunt
• Virtual Badges
• MATLAB FAQs
• Contributors
• Recent Activity
• Flagged Content
• Manage Spam
• Trial software

You are now following this question

• You will see updates in your followed content feed .
• You may receive emails, depending on your communication preferences .

quadprog is too slow for a convex unconstrained quadratic problem

Direct link to this question

https://www.mathworks.com/matlabcentral/answers/2048462-quadprog-is-too-slow-for-a-convex-unconstrained-quadratic-problem

   0 Comments Show -1 older comments Hide -1 older comments

Sign in to comment.

Sign in to answer this question.

Accepted Answer

Direct link to this answer

https://www.mathworks.com/matlabcentral/answers/2048462-quadprog-is-too-slow-for-a-convex-unconstrained-quadratic-problem#answer_1360437

• Conjugate Gradient Method : This is an iterative method specifically designed for solving large systems of linear equations or large-scale unconstrained optimization problems, particularly when the matrix ( A ) is symmetric positive semidefinite. MATLAB's built-in ' pcg' (Preconditioned Conjugate Gradient) function can be used for this purpose. Refer to the following MathWorks documentation for detailed information about 'pcg' function: https://www.mathworks.com/help/matlab/ref/pcg.html
• LSQR: The LSQR algorithm is an iterative method for solving large-scale linear systems and least-squares problems. Although it's not specifically designed for quadratic programming, it can be effective for large and sparse systems. MATLAB's built-in ' lsqr' function can be used. Refer to the following MathWorks documentation for detailed information about 'lsqr' function: https://www.mathworks.com/help/matlab/ref/lsqr.html

More Answers (0)

• quadratic program
• convex optimization
• unconstrained problem
• Optimization Toolbox

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

An Error Occurred

Unable to complete the action because of changes made to the page. Reload the page to see its updated state.

Select a Web Site

Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .

You can also select a web site from the following list

How to Get Best Site Performance

Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.

• América Latina (Español)
• Canada (English)
• United States (English)
• Belgium (English)
• Denmark (English)
• Deutschland (Deutsch)
• España (Español)
• Finland (English)
• France (Français)
• Ireland (English)
• Italia (Italiano)
• Luxembourg (English)
• Netherlands (English)
• Norway (English)
• Österreich (Deutsch)
• Portugal (English)
• Sweden (English)
• United Kingdom (English)

Asia Pacific

• Australia (English)
• India (English)
• New Zealand (English)
• 简体中文 Chinese
• 日本 Japanese (日本語)
• 한국 Korean (한국어)

Contact your local office